Roller-skate.



RULLER SKATE. APPLICATION FILED JUNE 2l. 1916.

Patented Feb. 20, 191'?.v

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APPLICATION FILED JUNE 2l, i916.

Patented Feb. 20, 1917.

2 SHEETS-SHEET 2- @y dom( fm@ FREDERICK WlVI. HILL, 0F BOSTON, IVIASSl-XCIIU'SLELWJS.y

ROLLER-SKATE.

Specification of Letters Patent.

Patented Feb. 20, 1917.

lApplication led June 21, 1916. Serial No. 105,034.

To all whom it may concern.'

Be it known that LFBEDERICK WM. HILL", a citizen of the United States, and a resident of Boston, countyof Suffolk, and State of Massachusetts, have invented an Improvement in Roller-Skates, of which the following description, in connection with the accompanying drawings, isa specification, like characters on the -drawings representing like parts.

My invention relates to roller skates and in the illustrative embodiment herein described I have shown a skate adapted for` attachment to one foot of the wearer and provided. with propelling means that can be operated by the wearers other foot;

In the drawings:

Figure 1 is a plan view of one illustrative embodiment of my invention;

Fig. 2 is a side elevation of the same;

Figs. 3, 4 and 5 show modifications; and

Fig. 6 shows a plan view of Fig. 5.

A foot rest of any ordinary type is shown at 1, provided with the usual clamps 2 for securing the skate to the shoe. The foot rest l is mounted at the front upon a suitable wheel or wheels 3 and upon the driving wheel 4 at the rear.- The driving wheel 4 is journaled in any usual manner as in the brackets 5 attached to the foot rest and is provided with a pulley 6 equipped with any of the usual devices, such as a pawl and ratchet, springs, etc., for permitting the driving wheel 4 to be turned through the pulley 6 in a forward direction, the pulley 6 being automatically returned to its original position during the'continued rotation of the driving wheel. The pulley 6 is equipped with any of the usual spring mechanisms so that after the foot lever 7 has been depressed the vpulley 6 will return to its original position automatically lifting the foot lever ready for another downward stroke.

Mounted upon the foot rest 1 is the fulcrum support 8 upon which is fulcrumed the foot lever 7 to one end of which is attached the strap or thong 9 which winds upon the drum 6. The lever 7 may be provided at its other end with a foot pedal 10. f

In operation the pedal 10 may serve not only as a convenient surface against which the driving foot thrusts in propelling the skate but may also serve as a rest for the driving foot when the wearer deslres to coast wise.

and 13 which support the pedal 10 eitherk in its outer position as 'shown in full line, or in its inner lposition as shown in dotted lines'.

By turning the pedal 10 on its pivot 11 from one kposition to the other, the leverage may be changed to vary the speed orpower with which the skate may be driven. Going up grade it would be desirable to have strong leverage and the user would, have the pedal 10 in its outer position. On the level, where less power would be needed, the inner position of the pedal might be more convenient.

In Figs. 3, 4 and 5 lI have shown modiications of means for mounting the driving lever 7 together with means for changing the leverage.

In Fig. 3 I have shown the'lever 7 mounted upon an irregularly shaped cam 14 provided with iianges 15 to keep the lever 7 from slipping oftl the cam. In the flange 15 ymay be cut a slot 16 which may be engaged by a pin 17 attached to the lever 7, to keep the lever from sliding length- Using thisl modification, high leverage for climbing grades may be. attained by pushing the lever 7 up and down with short strokes, fulcruming the lever on the rearward portion of the cam,-while greater speed at the expense of power, can be obtained by pushing the lever farther down,

making it fulcrum nearl the forward sur- .lever 7, the cam 18v being adapted to rock upon the foot rest 1 between two wings 19 mounted thereon.- With such an arrangement as this there will be al constant change of leverage during each part of the stroke of the lever 7.,

In Fig. 5 I have shown a similar modilication but have mounted the semi-circular cam 18 upon the foot rest 1 of the skate and have provided the v cam with cogs which engage a toothed rack 20 on the under side of the lever 7.

In using my invention many of the disadvantages linherent in other power roller skates are obviated. It is possible for the sol wearer of my skate to stand still, walk upstairs, etc., withV the skate on his foot withl out the inconvenience experienced in using other skates whereby the mere weight or inclination of the foot of the wearer drives the skate.

It is obvious that many modifications or variations of my invention might be made without departing from the scope or spirit thereof and I do not wish to be limited to the specific type or types of rollerrskate shown and described;

Having described my invention,- I claim:

l. A power skate comprising in combination foot-supporting means, and skatedriving'means whereby the skate may be driven by application of powerV through the other foot. i

2. A power skate comprising foot-supporting means resting upon wheelsV yand driving means for positively rotating one or more of said wheels and including a lever adapted to be operated by the other foot of the wearer.

said Viliootrsupport whereby the skate may` be driven by the up-and-down motion or' the lever 7.

lIn testimony whereof, I have signed my name to this specification, in the presence of two subscribing witnesses.

' FREDERICK WM. HILL. Witnesses:

GLADYS YV. KEAN,

RoisER'r H. KAMMLER.

Copies of this patent may be obtained for five ycents each, by addressing the Commissioner of Patents, Washington, D. C. 

